Sub Contracting Work Out

Hello guys, been mowing for several years now. Lately I've been turning down a lot of work that I don't do. Tree work, stumps, ferts....etc. Anyways, I'm thinking I need to subcontracting some of this work out. Looking for advise. Do I need to get contractor to sign a no compete contract to make sure they don't move in on my work? What type of percentage should I ask for? Have never done this and don't want to cheat myself. Is there a common percentage for all jobs or does it depend on the job? Any input will be appreciated.
Thanks in advance,
Kevin

. Do I need to get contractor to sign a no compete contract to make sure they don't move in on my work?

Yes , I would if I were you.

What type of percentage should I ask for?

You dont ask for a percentage , you bid the work and tell the contractor what you will pay for that job .If you are good at bidding you shouldnt have a problem.

Have never done this and don't want to cheat myself. Is there a common percentage for all jobs or does it depend on the job?

That all depends on how good of a salesman you are , You can bid too low and the contractors you sub to wont even do the work at the price you bid, as far as a percentage If I am not making at least 25 % its not worth my time. You are responsible for the quality of the work , collecting payment and paying the sub. If the customer stiffs you you still owe the sub. You will need certificates of insurance and workmans comp from the subs , also naming you as an additional insured.